Apparatus for indicating the position of moving bodies.



H. R. NORTON.

APPARATUS FOR INDIGATING THE POSITION 0F MOVING BODIES.

APPLICATION FILED FEBJ, 1912.

Patented Mar. 25. 1913.

WW I;

.two idler pulleys C, and carries l HEY 35.

KEV? N.

APPATMATUS' HOB INDIUl-LTING PQSETIQN OE IEQVENE? BODKES.

Specification of Letters Patent.

Z'Patented lvllar, 25, 12913.,

Application filed February 1, 3912. Serial No. 674,706.

To all whom it may concern Be itknown that l, HARRY R. Neuron, a citizen of the United States, residing at New York city, New York, have invented certain new and useful'lmprovements in Apparatus for Indicating the Position of Moving Bodies, of which the following is a clear, full, and exact description.

The object of this invention is to provide an indicating device to indicate at a given place by means of an electric circuit the present position of a moving object, such as an elevator car, a tloat in a tank of water, or the like.

lln carrying out the invention, I provide stationary contacts and a movable cont-a the movable contact being connected by suit able transmission mechanism with the movable body, preferably so as to travel shorter but proportionate distance to motion of the body, and provide electrical circuits and connections from the contacts to a suitable measuring instrument galvanometer type, carrying a poi 'c adapted to indicate on'a sealv the moving body, the movable contact controlling the flow of current or potentia the galvanometer to various degrees according to its position.

The scope of my invention will be pointed out in the claim.

in the accompanying drawings: Figure is a diagrammatic view of my i ,proved device connected with a sheave of an elevator.

Fig, 2 is a diagrammatic view of a ent circuit connection from-that shown in Fig, Fig, 3 is a cross section of a water tank showing" how. my improvedrdevice is adapted to be used in connection with the height of water.

As shown in the accompanying drawings A is an elevator sheave having a small drum on its shaft. The cable passes over the movable contact F at its free end. The contact may travel vertically up and down all y times in contact with the terminal strip G,

which is connected by a wire 1 with the armature O of a galvanometer.

M is the permanent field of the galvanont eter and P, which is adapted have end adjacent to the scale, isthe poi ter, The wire A leads from the armature 4 galvancmeter Q to or a bar-t H, and also by the wire 3 to the Contact S. From the contact S is a resistance R con necting with the contact S, and so on down a line of small contact blades, from the last of which the current returns by the wire 2 to the minus side of the battery H.

' In place of the sheave A, where the device is to measure the height of water in a tank, a float ball B will be provided for the tank E, from which a cable K may pass to the movable contact over a sheave C.

As shown in Fig. 1, current will normally flow through the following circuit: battery H, plus wire 3, contact S, S, S S S S together with the intermediate resistance, by wire 2 to the minus side of the battery, and when the contact is in the'position shown no difierence of potential will exist on the circuit comprising in part wires 1 and 4t, and the armature, hence the pointer will ft pointing to the brid ing from the strip to the contact S a CilillGIlCQ of potential wi t--e are named circuit suit;-

able contact reaches the last contact place of the circuit shown in which the contact strip g connects directly i ith the T e 10 to the galvanometer, and '5 e ccntamu p connects with the battery, and from the battery c-y a wire 40 direct to the galvanometer the resistances'r, 0* being insorted as heretofore described, In this instance, as the movable contact moves downwardly it will cut out resistance, and cause greater flow current to the galvanometer effect t :he needle.

claim as my in The herein describeo erotica-consisting or a stationary contact strip, a series of con tact blocks adjacent thereto, but separated therefrom, a movable contact normally in contact with said stationary contact, and adapted to close e circuit between said stationary sI- c iterposed between and y one of said contact end contact blocks and said resistances, and an automatically operated galvanometer connected in parallel with the electrical circuit for said contact blocks, said stationary contact strip being a part of the circuit for said galvanometer.

Signed at New York city, NewYork, this 30th day of January, one thousand nine hundred and twelve.

HARRY R. NORTON.

Witnesses:

MABEL DITTENHOEFER, FRED FRANCIS Wmss. 

